Curing Live Rock

The curing process can be done at home, but often is done at curing facilities in wholesale or retail stores.(?)Source: reefsystems.com

"Curing"is the process where wild
live rock is placed in a container with seawater and vigorous currents
to allow the decomposition of "wild" sponges and other organisms that died
due to transit from "the wild" and (most importantly) due to the
extraction from "the wild". Many "wild" sponges and other organisms
simply cannot survive in tank conditions and they are bound to die...
The curing process allows dead matter to decompose and remineralize out
of the rocks in an environment OTHER than you tank (because the
decomposition process can cause anoxic conditions that may kill your
fish/inverts). ALL Live Rock that comes from the ocean (wild or
aquacultured) MUST be cured before introduction to an established tank.

Introducing uncured Live Rock to you tank could cause a massive decomposition event ... potentially killing all your aquarium organisms
(learn more about this)